Improvement in machine for producing uniform twist in table-cutlery



shaped ways, to which the head-stocks b b are fitted, so as to moveclosely and freely thereon, each of which my teittftm.

Y EGBERT W.KSPERRY, OF WOLCOTTVILIJE, CONNECTICUT.

Lettcrszlatent No. 85,542,

dated January 5, 1869.

IMPROVEMENT IN MACHINE FOR PRODUCING- NIFORM TWIST IN SPOONS, &c. p

TABLE-CUTLERY,

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom 'it may concern:

Be it known that I, EGBERT W. SPERRY, of Wolcottville, county ofLitchfield, and State of Connecticut, have invented certain new anduseful Improvements in Machine for Producing Twist in Sheet-Metal Ware;and to enable others skilled in the art to make and use the same, I willproceed to describe by referring to the drawings, in which the sameletters indicate like parts in each of the figures.

The nature of this invention consists iu arranging mechanism inpractical forms, so that by the use thereof a symmetrical and uniformtwist can be easily and quickly produced in-a portion of a knife, fork,spoon, or ladle-handle, made from sheet-metal.

The object of' this invention is to produce uniformity in the twist, andto accomplish it in the least amount of time, and produce a richornamental appearance to the goods.

In the accompanying drawings- Figure 1 is a side elevation.

Figure 2 is a top view thereof.

ais a bed-plate, having dovetail or other suitablyis provided withset-screws, c, for securing them (either one or both) in any desiredfixed position.

al el" are clamp-plates, one of which, d, is secured or formed on thespindle c, the face of which is at or near the centre-line thereof.

This spindle e is fitted to a bearing in the head-stock b, and issecured'so as to move back and forth in a horizontal direction, and isprevented from tiu'ning by a spline or screw, j'.

g is a spring, secured to the head-stock by a screw, h. The upper end ofthis spring enters a notch in the outer end ofthe spindle e, the officeo f' which is to hold the jaw or plate (l closely back against the stockb, and allow it to be drawn forward to compensate for contraction ofmetal while the twist is being produced.

e is a screw-spindle, having a crank secured uponl one. end, and theplate e secured at or near the centre, at the other end.

lIhis spindle is secured closely, and turns freely ,iii

l is a dog, fitted closely, and works freely upon the i screw-spindle c,having a guide-bar, m, to prevent it from turning by the action of thescrew c', two jambnuts being arranged upon each side of the nut or dogl, so that the amount or extent of the twist can be limited or fixed bythe jamb-nuts. l

The jaws d d are secured to the plates d e", so as to open and close byscrews f' and are held in their proper position by dowel-pins 1t. v

Now, it will be seen that a longer or shorter piece may be securedbetween the jaws by moving back or f'orward`one of the stocks, b, andthat the amountof twist can be regulated by the jamb-nuts, so as toproduce a half twist or more, as desirable; as, for instance, twist theshank of' a knife. or fork so that the blade or tines will be in aright-angle position with the handle, thus producing a uniformsymmetrical twist in a perfect and rapid manner, with comparativelyinexperienced workmen.

I believe I have thus shown the nature, construction, and advantage of'this invention, so as to enable others skilled to make and use the sametherefrom.

I claim, in a machine specially designed for producing uniform twist -intable-cutlery, sppons, 85o., the vibrating spindle c, plate d, spring y,plate c", and screw e, working within the stock b', with the adjlisting-nuts k and collar l, for fixing the starting andstopping-points, or the amount of twist desired to be produced, with theclamps d d' for hol ing the work, all arranged and operatingsubstantially as described.

W. SPERRY. [L s.] Witnesses:

E. W. BLIss, J. W. BLIss.

